Carts are first come first serve Sis. That means if you want the item you need to check out. Carts will expire after 1 hour; items are not reserved. 

If you use CREDIT on a cash back item, you will not get cash back on the credit part used. If you want to get cash back on a cash back sale, save your credit for a different purchase.

As a reminder, cash back items are FINAL sale. When using coupon codes, items cannot be returned with the exception of the joining code for your first purchase.